Dvb01 User Manual [work] Jun 2026

This section is for users of the small "Antiference DVB01" set-top box (STB), a device often used to receive Freeview HD broadcasts on older televisions that lack a digital tuner. This device is particularly popular among vintage electronics enthusiasts for feeding high-definition content to classic displays.

Place two AAA batteries into the remote control.

Press the or NUM buttons to cycle through the functions ( F-1 , F-2 , F-3 , F-4 , F-5 ).

The module measures the input voltage without operating the relay. F-02: Overvoltage Protection Usage: Disconnects the load if voltage is too high. Behavior: When voltage , the relay activates. When voltage , the relay deactivates. Application: Battery charging disconnect. F-03: Undervoltage Protection Usage: Disconnects the load if voltage is too low. Behavior: When voltage , the relay activates. When voltage , the relay deactivates. Application: Preventing battery over-discharge. F-04: Interval Detection (Within Range) dvb01 user manual

: The relay activates when the voltage is either below the lower limit or above the upper limit.

Connect to the voltage source being measured (can be the same as the power source, up to

Activates the relay if the measured voltage is between P1 (Lower) and P2 (Upper). This section is for users of the small

Connected to COM when the relay is off; disconnects when the relay triggers. Use this if you want a device to run by default and shut off when the voltage limits are breached. Understanding the 5 Operating Modes

Negative terminal of the voltage being measured (Common ground). Relay Output Side (3 Terminals):

When the measured voltage is higher than the Upper Limit (V1), the relay pulls in (closes NO) to power your load. When the voltage drops below the Lower Limit (V2), the relay releases (opens NO) to cut power. Press the or NUM buttons to cycle through

The DVB01 is designed to be installed inline with your power system. It's often used as a smart "power protection board".

The Antiference DVB01 runs a fairly standard set-top box interface, controlled by its dedicated IR remote.

Here’s a basic outline of a setup to protect a 12V battery from over-discharge: